THERMODYNAMICS OF WATER-PERMEATED UNWELDED PYROCLASTS .1. EQUILIBRIUM PROPERTIES

被引：10

作者：

ASCOLESE, E ^{[1
]}

AURISICCHIO, A ^{[1
]}

BRIGGSSMITH, M ^{[1
]}

MITA, DG ^{[1
]}

PERNA, G ^{[1
]}

ROSSI, S ^{[1
]}

GAETA, FS ^{[1
]}

机构：

[1] CNR,INT INST GENET & BIOPHYS,VIA G MARCONI 10,I-80125 NAPLES,ITALY

来源：

JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH | 1993年 / 57卷 / 3-4期

关键词：

D O I：

10.1016/0377-0273(93)90013-H

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

We report here the results of an investigation of thermodynamic equilibrium properties of systems constituted by Phlegraean unwelded pyroclasts, dry or saturated with water. We have experimentally measured the porosity of samples of Phlegraean rocks and determined the values of the heat capacity and of thermal expansion of dry and water-perfused tuffs having different texture structures. Also the energetics of the process of adsorption of water on the large internal surface of these porous materials has been investigated. The amount of heat exchanged during the reversible formation of an adsorbed layer has been determined, in dependence of its thickness and as a function of temperature. The coherent picture emerging from the ensemble of all these measurements is that of a direct connection between the processes of adsorption/desorption and the stress of the porous rock. In very unsaturated soils these processes may constitute a much more efficient mechanism of transformation of thermal energy into soil deformation, compared with that of thermal expansion of the solid matrix.

引用

页码：219 / 233

页数：15

共 13 条

[1]

ANTRODICCHIA E, 1985, GEOTHERM RESOUR CO 1, V9

[2]

Bishop A.W., 1950, GEOTECHNIQUE, V2, P13, DOI [10.1680/geot.1950.2.1.13, DOI 10.1680/GEOT.1950.2.1.13]

[3]

Bishop A. W., 1960, NORWEGIAN GEOTECHNIC, V32, P1

[4]

BOLT GH, 1958, T AM GEOPHYS UNION, V35, P917

[5]

Bruni P, 1981, REND SOC GEOL ITAL, V4, P231

[6]

CARELLA R, 1983, 9TH WORKSH GEOTH RES

[7]

CARELLA R, 1986, 1986 FED S PAD

[8] HYDRODYNAMICS AND GEODYNAMICS IN PHLEGRAEAN FIELDS AREA OF ITALY [J].

CASERTANO, L ;

OLIVERIDELCASTILLO, A ;

QUAGLIARIELLO, MT .

NATURE, 1976, 264 (5582) :161-164

[9]

CASSANO E, 1986, APR INT S BAR

[10]

GAETA FS, 1984, EXPT DETERMINATION T

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